JPH046594A - Display control system - Google Patents

Abstract

PURPOSE:To operate a tablet without being disturbed by other operators by giving priority to one tablet and regarding other tablets not as an input object thereafter for a specific period. CONSTITUTION:An electronic pen 2 is put in an effective readable range 1a, namely, a tablet 1 which detects the electronic pen 2 is selected. Then the tablet 1 is given priority until the electronic pen 2 disappears from the range. In this case, the electronic pen 2 needs to be put in the effective readable range of the tablet 1 so as to obtain the priority of tablet operation. Other operators who lose this contention can not obtain the priority until the operator who wins the contention puts the electronic pen 2 out of the effective readable range 1a. Consequently, the operator can freely operate the tablet without being disturbed by other operators.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Application Field The present invention is directed to a graphic writing system in which multiple tablet input devices can be used in a video conference system or the like.
Regarding the display control method of the system, in particular, mutual tablet y
) Concerning a display control method that avoids conflicting operations.

B1 Overview of the Invention The present invention provides a display control method for a graphics/lighting/writing system in which multiple tablet input devices can be used in a video conference system, etc., in which priority is given to one tablet based on a predetermined standard. Then, by excluding other tablets from input targets until a predetermined period of time, only one tablet will automatically have priority, and once the operation starts, other operators will not be disturbed unless the conditions are met, and the system will continue to work. It provides technology that allows you to operate the device as you wish, just as if you only had a tablet.

C1 Prior Art There is a graphic writing system (including telewriting) that uses a tablet input device in a communication terminal such as a video conference system.

FIG. 4 is a configuration diagram showing an example of a graphic writing system. In the figure, 41 is a tablet input device, 42 is an electronic pen, 43 is a display control device, and 44 is a CR
T, graphic input is done using tablet input device 4
1 and the electronic pen 42 are used to input figures and select operations using the microcomputer. That is, tablet input bag ff14
By pointing the electronic pen 42 at an arbitrary position on the screen, the information is sent to a higher-level device. Typically, the information is expressed in X and Y coordinate values.

D1 Problems to be Solved by the Invention However, there is no problem as long as the configuration of the graphic writing system assumes one operator as shown in Figure 4, but with a video conference system etc. In order to target multiple operators, multiple tablet input devices 1F51a, 51b to 51 are used as shown in FIG.
It becomes necessary to connect the display controller n to the display control device 52 for operation. Here, when multiple operators operate on multiple tablets, if they are allowed to operate at the same time, each other's operations will conflict, complicating the processing of the display control device 52, and the operator may also The operator's operations may be displayed on the screen of the CRT 53, which can easily cause confusion.

The present invention was created in view of these problems, and
When operating a graphics writing system that can use multiple tablet input devices, only one tablet will automatically take priority and will not be interrupted by other operators unless conditions are met. ,
The purpose of the present invention is to provide a display control method that allows you to operate the tablet as you wish with the same feeling as if there was only one tablet in the system.

Means for Solving the E0 Problem The means for solving the above problem in the present invention is to give priority to one tablet according to a predetermined criterion in a display control method of a graphic system equipped with a plurality of tablet input devices. A display control method is adopted in which input is given, and thereafter, other tablets are excluded from input targets until a predetermined time, and as the predetermined standard, the first tablet that detects an input within the reading effective range of the tablet is selected, and the predetermined It is preferable to set the timing as the point when no input is detected from within the effective reading range. However, even if no input is detected from within the effective reading range, the tablet continues to have priority, and It is possible to allow the priority right to be canceled only if there is no detection within the period.

F1 Effect The present invention, when a plurality of tablet input devices are connected to one system, restricts the operation to only one tablet at a certain point in time, making other tablets unusable. It provides exclusive control.

Among the methods by which a tablet reads an electronic pen, there are methods that do not necessarily require contact between the tablet and the electronic pen, such as an electronic induction method, an electronic exchange method, and a capacitive coupling method. The range in which a tablet can read the position of an electronic pen is from several millimeters to several centimeters, but in the present invention, this is the effective reading range of the tablet, and the tablet that first detects an input within this effective range is selected. As a standard, priority shall be given to that tablet until no input is detected within that range, and other tablets will be excluded from input targets.However, if input is no longer detected within the valid reading range. However, the priority right of the tablet may be continued, and the priority right may be canceled only if there is no detection within a predetermined period by a timer or the like.

G. Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of one embodiment of a tablet input device used in the present invention. In the figure, 1 is a tablet input device, and 2 is an electronic pen.As mentioned above, among the methods in which the tablet reads the electronic pen, there is a method in which the tablet and the electronic pen do not necessarily have to come into contact. The area shown by the dotted line is the effective reading range 1a in which the electronic pen can be read. In this embodiment, the standard is to select the tablet 1 that has detected an input, that is, the electronic pen 2, within this effective range la, and
Priority shall be given to the tablet 1 until the time when the tablet 1 is no longer detected.

In order to obtain priority for tablet operation, the operator must first bring the electronic pen 2 within the effective reading range la of the tablet 1. Other operators who lose this competition cannot obtain priority rights until the winning operator removes the electronic pen 2 from the effective reading range 1a of the tablet 1.

FIG. 2 is a flowchart showing an embodiment of display control processing of a graphic display device according to the present invention. In the figure, the display control device includes each tablet input device 1.
Check the information coming up from ~n in order, and first “
Priority is given to the tablet for which it is determined that the electronic pen is within the effective range, and the tablet is treated as a controlled tablet until the electronic pen leaves the effective range.

In the above-mentioned system, if the operator wishes to continue processing, but due to an operational error or the like causes the electronic pen to move out of the effective range even momentarily, there is a risk that priority will be taken away.

FIG. 3 is a flowchart of processing of another embodiment that improves such disadvantages. In the figure, even if the electronic pen moves out of the effective range of the tablet that has gained priority, it does not immediately give up priority, but instead retains priority for a predetermined time using a timer, during which time the electronic pen returns to the effective range. If you go back inside, you can continue processing continuously.

As described above, in this embodiment, the operations using the tablet do not interfere with each other, and the control target is smoothly transitioned, and the following effects are obvious.

(1) When multiple operators use multiple tablets to perform various operations on the graphic control device, only one tablet automatically takes priority at the same time, so one tablet is included in one system. It can be operated with the same feeling as .

(2) Once you pick up the electronic pen and start operating the tablet, you can operate the tablet as you wish without being disturbed by other operators unless conditions are met.

H9 Effects of the Invention As described above, according to the present invention, when operating a graphic display device equipped with multiple tablets, only one tablet is automatically given priority, and once the operation is started, unless the conditions are met, It is possible to provide a display control method that allows the user to operate the tablet as desired without being disturbed by other operators, as if the tablet was the only one in the system.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the tablet input device of the present invention, Figs. 2 and 3 are flowcharts of the processing of the embodiment, Fig. 4 is a configuration diagram of the graphic writing system, and Fig. 5 is the configuration of the conventional example. It is a diagram. 1.41.51a to 51n...Tablet input device,
2.42...Electronic pen, 43.52...Display control device, 44.53...CRT0

Claims (4)

[Claims] (1) In a display control method for a graphics system equipped with multiple tablet input devices, priority is given to one tablet based on predetermined criteria, and then other tablets are excluded from input targets until a predetermined time. Characteristic display control method. (2) A display control method characterized in that the first tablet on which an input is detected within the tablet's effective reading range is selected as the predetermined criterion according to claim (1). (3) A display control method characterized in that the predetermined period according to claim (1) is a point in time when input is no longer detected within the effective reading range of the tablet. (4) According to claim (3), the priority right of the tablet is continued even if no input is detected within the reading effective range, and the priority right is canceled if no input is detected within a predetermined period. Display control method described.